Graphene specialist Directa Plus PLC (LON:DCTA) has been awarded a patent in the US for its manufacturing process that just uses water with no chemicals, solvents or surfactants.
Directa said this sustainability was already proving attractive to US companies.
In addition, the 100% production yield means that Directa Plus can manufacture products in large volumes at attractive prices, it said.
Giulio Cesareo, the firm's chief executive, said: "This grant represents a key development in launching our products into the United States.”